Stephenson Avenue Extension Mitchell Freeway

Overview

Road
Project type
$461.4 million
Total budget
Under Construction
Project phase
Main Roads WA
Lead agency
800
Jobs supported
Late 2020
Start date

Early 2026
End date

The Stephenson Avenue Extension will provide a new connection from Cedric Street to Scarborough Beach Road, including an interchange at Mitchell Freeway with a southbound Smart Freeway on-ramp, and new local road links to Ellen Stirling Boulevard. The Stirling Bus Interchange is also underway and will be delivered as part of this project.

Scope

Phase One of the project was delivered by the City of Stirling and opened in February 2022. This included construction of a new road from Scarborough Beach Road to Howe Street.

Phase Two is underway, with expected completion in late-2025. Stephenson Avenue will be extended from Howe Street to Mitchell Freeway and Cedric Street interchange, and includes a number of new local roads and shared paths.

The Stirling Bus Interchange is undergoing a major upgrade with anticipated completion in early-2026. The project will increase capacity from an 18-stand to a 29-stand facility, with a new pedestrian access between Stirling Station and the southern car park. Main Roads WA are delivering this upgrade on behalf of the Public Transport Authority.

The new southbound on-ramp to the Mitchell Freeway from Cedric Street opened late-2024 and forms part of the Smart Freeway. This runs along the alignment of the future Stephenson Avenue and will improve congestion and connectivity.

For detailed project information, visit Main Roads WA.

Benefits

A new traffic signalised intersection at Scarborough Beach Road.
Ease traffic congestion and reduced traffic times.
Provision of a safe route for people riding and walking in the area.
Improve accessibility to the Stirling City Centre.
New shared paths along Stephenson Avenue.
Improved streetscaping in the area.

Gallery

Progress on the new Stirling Bus Interchange.

Progress on the new Stirling Bus Interchange.
Video: Pedestrian bridge installation.

Video: Pedestrian bridge installation.
The first artwork on the project features designs by Noongar artists David Jones and Kamsani Bin Salleh.

The first artwork on the project features designs by Noongar artists David Jones and Kamsani Bin Salleh.
A new southbound on-ramp to the Mitchell Freeway is now open.

A new southbound on-ramp to the Mitchell Freeway is now open.
Stephenson Avenue Interchange Bridge now spanning across Mitchell Freeway.

Stephenson Avenue Interchange Bridge now spanning across Mitchell Freeway.
The Stephenson Avenue Interchange Bridge and Stirling Station Bus Interchange Bridge is being incrementally ‘launched’ (pushed out) over the Mitchell Freeway.

The Stephenson Avenue Interchange Bridge and Stirling Station Bus Interchange Bridge is being incrementally ‘launched’ (pushed out) over the Mitchell Freeway.
The Stephenson Avenue Extension is now over 40 per cent complete.

The Stephenson Avenue Extension is now over 40 per cent complete.
Video: Learn more about the Stephenson Avenue Extension Project.

Video: Learn more about the Stephenson Avenue Extension Project.
Aerial view of the Stephenson Avenue Extension.

Aerial view of the Stephenson Avenue Extension.
View of early works on the project.

View of early works on the project.
Stephenson Avenue Extension - Scarborough Beach Road to Sarich Court.

Stephenson Avenue Extension - Scarborough Beach Road to Sarich Court.

Project map

This map shows an aerial view of the project location. Turn on the toggle below to show disruptions.

Show disruptions

Detour options

Stirling Station Southern Car Park Disruptions - From Thurs 10 Oct 2024

A section of the Stirling Station southern car park and the motorbike shelter will be closed from Thursday 10 October 2024 to commence the car park upgrade. ACROD, drop off/pick up bays and short term parking will be relocated to the eastern section of the car park. Alternative parking available, follow traffic signage. See Main Roads Travel Map for the most up-to-date information here.